Oil-burning system.



E. W. TUCKER.

OIL BURNING SYSTEM. APPLICATION FILED SBPT.14, 1 09.

1,098,065. Patented May 26, 1914.

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zauo'cuh A TTORNE Y.

E. W. TUCKER.

' OIL BURNING SYSTEM.

APPLICATION FILED SEPT. 14,' 1909.

' 1,098,065, Patented May 26, 19m

3 SHEETS-SHEET 2.

WITNESSES: I INVEI VTOR.

. 7 N /22 f 1/1/QAMV I v By fl Www A TTORNE Y.

E. W. TUCKER.

OIL BURNING SYSTEM.

APPLICATION FILED 531mm, 1909.

1,098,065. Patented May 26,1914.

3 SHEETS-SHEET 3.

A\ I I I 4 I I I I I I I I I 5 WITNESSES v v IN VEN TOR.

A TTORNE Y.

i To all whom may concern:

EDWIN w. rucnnn, or SAN rnancrsco, can'rronma.

Specification of Letters Patent.

cit-BURNING sYsrnn:

' Patented May as, rare.

Application filed September 14, 1909. Serial No. 517,617.

Be it known that I, Enwm citizen of the United States, residing at San Francisco, in the county'of San Francisco, State of California,and whose post-oilice address is 256 Spear street, SanyFra'n'cisco, California, have invented certain new and useful Improvements in Oil Burning Systems, of which the following is a specifica-. tion.

This invention relates to improvements in fuel oil burning systems and more par-. ticularly to the heating circulating and straining mechanisms thereof, and consists in'the novel construction and the arrangement of the parts as hereinafter described.

' forth and The objects sought to be accomplished are to obtain the maximum heating capacity within the minimum of space, to combine the oil heater and two separate sets of pumps and a double strainer of such construction that the flow of-oil can be instantly diverted and a strainer cleaned and replaced without stopping the flow 'of oil to the burner;

all of which mechanisms are combined as a single, compact unit occupying the minimum of space.

The invention will be hereinafter fully set particularly pointed out in the claims. I i In the drawingsz'Figure 1 is a general perspective view drawn to illustrate the several elements combined in accordance with this invention. Fig. is a detail in end elevation of the oil h ating chamber.

Fig. 3 is a similar view of the same, with the cover removed to expose the heating coil.

1 Fig. 4 is a plan view from above in longitudinal cross-section of the 'same'taken on the line 4-4 Fig. 2 and disclosing the ar rangement of the div'ision'plates and heating coil within the heating chamber and also the manner of fixing the heating coil through the cover. Fig. 5 is a detail in end elevation of the inside of the cover of the V heating chamber. Fig. 6 is a vertical crosssection of the double strainer, the intermediate valve thereof being shown in full lines.

Fig. 7 is an end elevation of the same dis-- closing the offset inlet and outlet of the strainer. Fig. 8 is a plan view from above of the same with the intermediate valve removed to disclose the several inlet and outlet ports. Fig. 9 is a diagrammatic view of the piping to the heating coil.

W. TUoKER, a

through the In detail the construction consists of the oil heating chamber 1 mounted upon the foot brackets 2 which form the floor base of the apparatus. The oil'chamber is hermetically sealed by the "cover 3 bolted thereto. The drip-tray d rests upon and is securely fasmanner. The twinpumps rest upon and are suitably secured to the said tray, the respect1ve steam and oil ends 5 and6 of said pum s 'tened to the heating chamber in any suitable being on opposite sides of the division wall The steam supply-to the pumps passes by the governor 11, which is operated by the pressure within the air chambers 12 and 13,

which are cross-connected by the pipe 14;. From the throttle the steam passes through the valve 15 to the distributing pipe 16 into the respective steam chests of the pumps as controlled by the valves 1'7 and 18. The exhaust steam controlled by the valves 19 and 20 enters the exhaust pipe 21, which is directly connectedto the inlet of the heating coil 59. The shunt pipe 22, and valve 23,-

being supplied through the valves 28 and 29 as selected, said valves each controlling the inlet to its respective pump. vThe discharge ports of the pumps are connected through the valves 30 and 31 to-v the common discharge pipe 32', which is provided with the spring relief valve 33, which has a return connection with the oil reservoir.

The oil under pressure is forced through pipe 8 through the valve 9, through the'throttle 10, which is controlled the inlet valve 35 into the heating chamber below the diaphragm 36, passing thereunder and returning under the diaphragm 37 thence back the length of the heating chamber and out through the discharge pipe 38, thence through the stop cook 39. and the T 40 to the strainer.

A Toy-pass 34' controlled by a valve 34 leadsfrom pipe 32 to the T 40, and the latter is also provided with an outlet covered by cap 70.

The strainer comprises the double chambers 41 and 42 and the'plug valve stocket 43 all cast integral. The oil enters the strainer through the inlet 44 and enters the valve through the port 45 through the hollow, ported valve plug 46 having the horizontal diaphragm or upper bottom 47 from which it passes through the ports 48 or 49 as selected leading into the chamber 41 or 42. These chambers are provided with the internal annular ledges 50 upon which the I tering the chamber as before described, must pass through the strainer before entering the port or 56 below the diaphragm 47 from which it issues through the outlet 57. By thus locating two independent strainers with the intermediate double-bottom three-way valve; plug controlled by the handle 58, the flow of fuel can be switched from one strainer to the other without interruption by throwing the valve handle a half turn or 180 degrees. By throwing the handle a quarter turn or 90 degrees the flowof fuel through the strainers is completely stopped.

The heater consists of a continuous coil of tubing arranged in continuous horizontal return bends with a drop bend between each tier of coils, whereby the liquid or fuel introduced through the inlet at the top circulates back and forth through the return bends and drops to the next tier of return bends below until the outlet at the bottom is reached, the circulation being in a constant drop or gravitating direction. By this construction a greater area of heating, surface can be introduced into a given space, and a perfect circulation through the coils attained. This construction of coil is designed to displace the common helical form 0 spiral coil which is impracticable when placed witlrthe axis of its spirals in a hori zontal position for the reason that steam introduced into such a coil condenses and gradually fills the lower portions of said spiralswith water, which must be alternately lifted out of each spiral and evacuated fromthe coil causing undue back pressure and general inefficiency; furthermore the transverse form of coil requires considerably less space for a given quantity of heating area. To cause an internal transverse circulation of the fuel oil within the heater and keep itin constant association with the heating coils the diaphragms 36 and 37 are introduced into the heating chamber against the walls of which they snugly fit and divide the coil into the desired number of horizontal sections. These diaphragms being shorter than the heating chamber they are so placed that they extend from alternate ends thereof'to a point approximating the opposite end of the heating chamber, whereby the fuel must pass under the diaphragm before rising to the next section.

In this art considerable dificulty has been encountered in attaching the inlet and outlet ends of the heating coils sothat they can be hermetically sealed where they pass into the heating chamber and be readily removable without bringing undue strain on the body or the ends of the coil. These difliculties are entirely overcome by the present invention in which the inlet and outlet ends 59 and 60 are brazed into the threaded stems 61. These stems are provided with the hexagonal heads 62 and the annular flanges 63 which fit similarly shaped sockets 6d formed in the cover 3 or the walls of the heating chamber. The gland 65 threaded on the stem 61 is adapted to compress the packing material 66 within the stufling box 67 to draw the hexagonal head and flange snugly into the socket therefor wherein it is hermetically sealed by the stuffing box. The hexagonal head is provided to prevent the twisting of the stem 61 when the gland 65 is ,screwed up. By this method of securing the heating coil (which is composed of very thin gage copper tubing) to the cover 3 the coil is not subjected to any torsion or twisting within the packing gland as in the common form of attachment. The coil is rigidly and hermeticallyattached to the cover 3v and is removed as a part thereof from which it is easily. detached by simply unscrewing the gland 65.

In operation the fuel oil is drawn from the storagetank through the pipe 27 and forced by the pumps throu h the pipe 32 into the oil heater, any undue pressure in the system is relieved through the spring valve 33 which has a return connection to the storage tank. From the heater the oil passes through the T 40 into which the thermometer .68 is screwed to indicate the temperature of the fuel issuing from the heater. mechanism as described the heated and strained fuel passes. directly to the burner.

The live steam is taken through the pipe 8 as before described and may be delivered directly to the pumps, by wa of valves 17; 18 and exhausted through t e pipe 21 by way of valves 19, 20 and introduced through the inlet 59 of the heating coil through which it circulates giving ofi its heat to the 130 Passing through the straining directly to the coil in suflicient quantity to obtain the desired temperature, or the live steam may be first passed through the coil before admission to the pumps. These are expedients resorted to only during a heavy demand for hot oil in increased quantities at the burners. Ordinarily exhaust steam contains suflicient heat for the purpose, which otherwise'would be lost if not utilized in the heater. The pressure gage 69 indicates the pressure in the oil system.

An important advantage of my invention is that the parts are so arranged that 'the pumps may be utilized in an emergency such as a fire or for pumping out a ship or other purposes. This latter is accomplished by throwing the handle 58 of the strainer a quarter turn from the position shown cutting out the strainers'completely, by closing the stop cook 39 and the inlet valve-- which completely cuts out the heating chamber, by opening the valve 34, and removing the cap 70 so that a hose may be attached at the discharge opening covered by said cap, the fluid from pipe 32 being caused to travel through the by-pass 34 to said discharge opening and the suction pipe 27 be ing provided with a by-pass (not shown) between thepump and the storage tank to be introduced into the liquid to be pumped.

' This opens the suction pipe 27 free of the 'oil' fuel functions leaving the pumps free to operate, discharging through the pipes. 32 the valve 34 and the T 40 when the cap 70 has been removed.

Having thus described this invention what is claimed and desired to secure by Letters Patent is 1. A fuel oil apparatus comprising a hori-' zontally' disposed heating chamber, twin pumps supported above said heating cham-- her, a fuel suction p'ipe connected to said' pumps-through independent valves, a common fuel discharge pipeleading fromsaid pumps and to the inlet opening of said heating chamber, independent valves for controlling the 'fuel ''discharged from said pumps, a fuel outlet pipe leading from said &

heating chamber, a strainer connected with said fuel .outlet pipe, a by-pass between the inlet and outlet pipes of the heating chamher, a valve controlling said by-pass, a heating coil Within said heating chamber, and

connections leading from the exhaust steam pipes and/the live steam pipes of said pumps to the inletof said coil. 7

2. A fuel oil apparatus comprising a horizontally disposed heating chamber, a heat:

ing coil disposed within said heating chamber; twin force pumps mounted on said heating chamber, pipe connections from the outlets of said pumps to the inlet of the heating chamber; a strainer, a valve controlling the same, connecting pipes between the inlet of said heating coil and the exhaust pipe and the live steam pipe of said pumps, and valves so located that the said pumps may operate independently, and the heating chamber be cut out of operation, and the heating coil receive exhaust steam from the pump or receive the live steam before it enters the pump.

3. A fuel oil apparatus comprising an oil heater, an oil supply conduit leading thereto, an outlet conduit leading therefrom and provided with a lateral discharge opening, spaced apart valves in said outlet conduit and located on opposite sides of said lateral discharge opening, a bypass connecting said supply and outlet conduits at a point between said valves, a valve controllingsaid valves, a valve controlling said'bypass, and a removable cap closing-said lateral d1s-- charge open-ing.

In testimony whereof, I have hereunto set my hand this 19th day of August, 1909.

- EDWVIN- W. TUCKER. Witnesses:

BALDWIN VALE, EDWIN W. TUCKER, Jr. 

